Quartz-mill.



HQH. TOBENER.

QUARTZ MILL.

APPLICATION FILED JAN. 17, I916.

Patented Feb. 13, 1917.

2 SHEETS-SHEET I.

Millessfis H. H. TOBENER.

QUARTZ MILL. APPLICATION FILED JAN-17,1916.

Patented Feb. 13, 1917.

2 SHEETS-SHEET 2.

HART H. TOBENER, OF SAN FRANCISCO, CALIFORNIA.

QUARTZ-MILL.

Specification of Letters Patent.

Patented Feb. 13, 1911.

Application filed January 17, 1916. Serial No. 73,251;

To all whom it may concern:

Be it known that I, HART H. TOBENER, a citizen of the United States, residing in the city and county of San Francisco and State of California, have invented a new and useful Improvement in Quartz-Mills, of which the following is a specification.

My invention relates to quartz mills wherein a rotating element operates in conjunction with a series of stationary projections for the purpose of crushing quartz and similar materials by impact; and theobjects of my invention are- First, to provide a cheap, simple and effective mill for crushing quartz and the like. 7 Second, to provide a device of the character described that is adapted to crush quartz. and the like by impact.

Third, to provide a series of projections and impelling means adapted to hurl or project pieces of. quartz and the like against said projections with such force as to cause said quartz to be broken by impact.

Fourth, to provide means for collecting small pieces and particles of broken quartz and returning the same to the impelling means whereby said particles may be again projected or impelled against the projections and further broken, and

Fifth, to provide means arranged to remove or separate the finer broken particles of quartz from the device.

I accomplish 'these several objects by means of the preferred form of the device disclosed in the drawings forming a part of the present specification wherein like characters of reference are used to designate similar parts throughout the said specification and drawings, and in which Figure 1 is a vertical sectional view of my device disclosing the relative arrangement of the several parts and the means whereby the impelling agent or means is rotated.

Fig. 2 is a plan view of the device on ;a smaller scale, with the top removed therefrom, and

Fig. 3 is a bottom view of the top of the quartz mill removed therefrom.

I propose to provide an improved quartz mill of simple and cheap construction, re-

quiring comparatively little power to operate, that is adapted to break'ore by impact and that may be described as follows:

Referring 'to the drawings, the numeral 1 is used to designate a suitable frame constructed preferably of timber and arranged to support a cylindrical chamber 2 having a depending annular trough 3. Walls of the upper portion of the cylindrical chamber 1 are provlded with a series of vertically disposed internal projections 4.

A top 5 is formed upon the cylindrical chamber 1 by means of radial converging staves 6 having annular abutments 7 thereon, the purpose of which will hereinafter be more fully described, which have their outer ends resting upon the tops of the proectlons 4 and their inner ends secured to a collar 8 arranged concentric with the chamlger 1 and to form an opening for said cham- The top 5 is preferably secured to the timber frame 1.

The annular trough 3 is provided with a suitable screened outlet 9 which communicates with a trough 10 arranged to carry the slimes from the annular trough 3 after the quartz has been reduced to the proper size.

Rotatably mounted upon the frame 1 and arranged concentric with the chamber 2 is a rotating impelling agent comprising a cir-- cular table 11 having radial vanes 12 with outer inclined edges 13 secured near the outer edges thereof. The annular space between the periphery of the table 11 and the walls of the chamber 2 is sufficient to allow the passage of small particles of quartz into the trough 3 below.

The table 11 is also provided with a series of apertures 14 below which are secured inclined scoops 15 which are set at an angle that will scoop the slime from the trough 3 and by means of centrifugal force impel the same through the apertures 14; and against Ehe projections 1 on the sides of the chamr The table 11 is supported and rotated by means of a vertically disposed shaft 16 which is rotatably mounted within suitable bearings 17 secured to the frame 1 and is also provided with a bevel gear 18 which meshes with and is rotated by a pinion 19 secured to a horizontally disposed shaft 20 also rotatably mounted upon the frame 1 by means of suitable bearings 21. The shaft 20 is also provided with a suitable pulley 22 by means of which the machine may be operated.

The operation is as follows:

The quartz or ore to be crushed is introduced into the chamber 2 through the collar 8 and onto the impelling agent or table The inner 11 which is rapidly rotated by means of the driving mechanism hereinbefore described. As the table 11 rotates, the centrifugal forces imparted to the quartz or material upon said table 11 will impel or project said material against the projections 4 and thereby break the said quartz or material by imact. p The projections 4 will in turn deflect the passage of the particles of ore either upward in which case they will again be impelled against the angular abutments 7 and thereby be deflected or returned to the center of the rotating table 11, or against the inclined edges 13 of the vanes 12 in which latter case they will be again projected or 1m-' pelled onto the projection 4 and further broken by impact.

Some of the smaller pieces will drop between the periphery of the table 11 and the inner walls of the chamber 2 and into the annular trough 3 and those pieces too large to pass. through the screened opening or outlet 9 will be scooped up by the inclined scoops 15 and impelled through the apertures 14 and against the projections 4 until the material is broken into such small particles that they may easily pass through the screened outlet 9 as slime.

The vanes 12 are designed to assist 1n impelling the material from the table 11 and onto the projections 4.

It is evident from the foregoing that I have provided improved means whereby quartz or ore is repeatedly impelled against a series of projections until thoroughly broken by impact.

It is also obvious that I have provided improved means for breaking up ores, that is simple and cheap in operation as well as construction as the power 1s not required to crush the ore by force or weight but by impact resulting from being thrown or impelled from the rotating gal force.

Having thus described my invention what I claim as new and desire to secure ,by Letters Patent is 1. A quartz mill comprising a cylindrical chamber having a series of vertically disposed internal projections therein; impelling means rotatably mounted within the chamber and adapted to project quartz and the like against the internal projections; an annular trough arranged below the chamber to receive broken particles of quartz impelled from the impelling means; and means directly connected and rotatable with said impelhng means arranged to remove the quartz from the trough and return the same to the impelling means.

2. A quartz mill comprising a cylindrical chamber having a series of vertically disposed internal projections therein a table rotatably mounted within the chamber table by centrifumanners and adapted to impel quartz and the like against the internal projections; a trough arranged below the table and the chamber to receive broken pieces of quartz and the like; and means secured to the table and arranged to return the quartz from the trough to the table.

3. A quartz mill comprising a cylindrical chamber having a series of vertically disposed internal projections therein; a table rotatably mounted within the chamber and adapted to impel quartz and the like by means of centrifugal force, against the internal projections; a trough arranged belOW the table and the chamber to receive broken quartz; means secured to the table and adapted to return the broken quartz from the trough to the table; and means secured to the table and adapted to impart a further velocity to the quartz and thereby assist in impelling the same against the internal projections.

4. A quartz mill comprising a cylindrical chamber having a series of vertically disposed internal projections therein; a table rotatably mounted within the chamber and adapted to impel quartz and the like against the internal projections; a series of vanes secured to the surface of the table and near the periphery thereof and adapted to engage and further increase the velocity of the quartz; an annular trough arranged below the table and the chamber; a screened outlet in the trough arranged to carry slimes therefrom; and means secured to the table and adapted to return the material from the trough to the table and further impel said material against the projections.

5. A quartz'mill comprising a cylindrical chamber having a series of vertically disposed internal projections therein; a table rotatably mounted within the chamber and having apertures therein and adapted to receive quartz and similar material and to impel the same by means of centrifugal force, against the internal projections thereby breakingsaid material by impact; an annular trough arranged below the table and the chamber to .receive broken pieces of quartz; and inclined scoops s'ecuredto the table below the apertures therein and arranged to return the material from the trough to the said table.

6. A quartz mill comprising a cylindrical chamber having a series of vertically disposed projections arranged around the inner walls thereof; a table having a series of apertures therein rotatably mounted within the chamber and adapted to impel quartz and similar material against the projections; a series of vanes secured to the surface of the table and (adapted to impart additional velocity to the material; an annular' trough below the table and chamher arranged to receive broken material:

amazes and inclined scoops secured to the table and below the apertures therein and adapted to return the material from the trough to the table; and means adapted to dram slimes from the trough.

7. A quartz mill comprising a cylindrical chamber having a series of vertically disposed projections arranged around the inner walls thereof; a table having a series of apertures therein rotatably mounted within the chamber and adapted to impel quartz and similar material against the projections; a series of vanes secured to the surface of 'the table and adapted to impart additional velocity to the material; an annular trough below the table and chamber arranged to receive broken material; inclined scoops secured to the table and below the apertures therein and adapted to return the material from the trough to the table; means adapted to drain slimes from the trough; and a suitable cover secured to the chamber and having inclined abutments on the lower surface thereof arranged to deflect broken pieces of material to the center of the table;

In witness whereof I hereunto set my 7 signature.

HART H. TOBENER. 

